baker



E. K. BAKER.

omounum mm.

APPLICATION FILED MAR. 25. I9I6. A1

Patented bept. 2, 1919.

Y 2 SHEETs-SMEET I- IIIIIII III III

IIIII on the line 3-3 of 85 entlal Section on the sired .EBLEIUINGBAKER, OF CHICAGO, ILLINOIS, A-SSIGNOB T0 0F CHICAGO, ILLINOIS, ACORPORATION UNIVERSAL RIM COMPANY,

OF ILLINOISt nnuovm'annn nm.

rying rims therefor. The primary object of lessen the cost thereof. A myinvention is to provlde a construction by which the demountable and rimsand to rim shall be adapted to be buttoned on to the wheel in the usualmanner and still be firmly supported and secured thereon without resortto the use of 'members which act as wedges between the rim and wheel andwhich inevitably warp and distort the rim to an extent which isperceptible in the wear of the tire.

The general nature of my invention and also the details of the bestembodiment thereof which I have thus far devised will be readilyunderstood on reference to the drawings that form part of thisspecification, and in which: Figure 1 is a side elevation of a motorvehicle wheel fully equipped in accordance with my invention ;-Fig. 2 isa full sized cross section on any of the lines 2-2 of Fig. 1;-Fig. 3 isa similar section Fig. 1;-Fig. 4 is a plan cation, the tire beingomitted ;-Fig. 5 is a cross section on the line 5 5 of Fig. 4;- Fig. Y6is a cross section onthe line 6`6 of Fig. 4;-and Fig. 7 is a verticalcircumferline 7-7 of Fig. 4.

`As shown in the drawings, 1 represents the wheel hub ;2, the radialSpokes;-3 the wooden felly;*and, 4 the endless metal felly band or fixedrim within which the felly and spokes are compressed. The fixed rim, 4,is provided with a raised conical flange, iich overhangs the inner sideof the Said fixed rim is secured in any suitas by the usual tire boltsshown) and by the shoulders, 6, of the nuts, 7; on the felly.

The demountable rim, 8, may be of any de.- cross section according tothe cross section of the tire to be used thereon. In the Specificationof Letters Patent. Application led Iarch 25, 1916. Serial No.

Atransplit demountal A lars, due to the fact that ture the studs areutilized as auxiliary sup` 110 Y Patented sept. 2, i919. 86,597.

shown a rim of the now conventional inte ally-Banged straight-side Bakertype. e demountable rim is of greater circumference than the fixed rim,4, and its innermost edge presents a conical surface, 9, which fits thefiange, 5, of the fixed rim. annular space, 10, remains between the tworims.

To secure the demountable rim u'pon the fixed rim, I thrust thedemountable rim axidrawings I have 4ally against the fiange, 5, of thefixed rim,

as well shown in F ies. 2, 3, this purpose I provide attached to theouter side of the wheel felly by operating bolts, 12. A may be of thetype which present their heads outwardly and have their threaded endsheld in the shouldered nuts, 7. plates are substantially rectangular inform and each thereof is characterized by an outer end, 11', whichpresents a rounded edge, 11",. to the outer flange of the demountle rim.The inner end, 13, of the pressure plate, 11, turns toward the wheelfelly, and to prevent its marring the wooden felly there is a metalwasher, 14, on the latter. The end, 15, of the washer, 14, provides astep which prevents pressure plate from annoyingly twisting on its boltwhen the bolt is rotated to fasten or loosen the pressure plate, 11. Asshown in Fig. 1, I prefer that there shall be six bolts, 12, and sinpressure plates 11.

n many and particularly when the rim -is of the en less standardclencher type, .the en ent of the demountable rim upon the singe line ofconical contact afforded y the back-flange, 5, provides a support w ichis adequate without the assistance of ot er parts or contacts. But

le rims I necessary and desirable to center the demountable rim upon thefixed rim preparaally upon the back-flange, 5, of the fixed rim;otherwise the perpendicularity of the rim to the wheel axis .is notinsured. For this purpose I provide centering studs between the tworims. the functions of the similar studs described in my Patent No.1,095,953. he structures, however, differ in several important particuinthe present struceven in such d practically always in the case of ,h

find it both pressing the demountable rim axiese perform some of portsfor the rim and are not required to correct that distortion of the rimmentioned in said patent and caused by the former associa-tion of wedgelugs therewith.

The studs which I employ in the present case are of two kinds. Thegreater number thereof are fixed on and project outwardly from vthefixed rim, 4, near the' outer edge (near the outer edge thereof. Thelesser number are provided' on the inner periphery of the demountablerim thereof) and in a group diametrically opposite the valw'e stem holein the demountable rim.

Of the first mentioned studs there are preferably nine, where sixpressure plates are used. These studs are marked, 16, and, as shown inFig. 2, are preferably made by striking up portions of the metalcomposing the fixed rim. The outer ends or tops, 16 of these studs arepreferably substantially fiat; the stlds being truncated cones. They areof Such height as to support the rim in cross sectionally parallelposition with respect to the fixed rim, may be somewhat lower when thediameter of the wheel is large. I prefer that there shallbe one suchstud. 16, back of each pressure plate. The other studs, 16, arepreferably arranged midway between the pressure plate positlons.

The tire, T, has a valve stem, V, which extends through a hole, 17, inthe rim and through a hole, 18, in the fixed rim and felly. As usual,the valve stem marksvthe pivoting or hinging point of the demountablerim; in other words, the point on which the rim swings with respect tothe wheel during the operation lof the buttoning-on and unbuttonin therim. i

iametrically o hole, 17, I provi e the demountable rim with one or morefixed studs, 19, of. the sec-f ond kind ment1oned. These studs," 19, may

be round headed rivets applied 'to ,the .inner periphery of the rim,e8,as best shown in Fig. 3. The omission of studs, 16, upon part of thefixed rim which opposite the valve stem aifordsgthe clearance which isnecessary to allow thegmrim to button into position on'the wheel; ortheother hand, when the rim is thus positioned studs, 19, eff which thereare preferably three, as shown, button into place on the periphery ofthe fixed rim, 4, and therefore aid m'centering the rim on the .wheeland also support that'part of the rim inv parallelism with the fixedrim, i'n the manner hefore explained as to the stud, 16. I

To adapt this form of support to transpiit 'demountable rims I makey twoimportant changes in the former construction of such rims. The firstconsists in providing means for positively and non-adjustably, butdetachably, tying together they rim ends upon a circumferential linewhich substantially isl diametrically 4; though they 0 the back-flange,which action causes said osite the valve stem the outer flange of the7The fixed rim, 4,

rear flange of the demountable rim. By so is held against expansion bthe thrust of the vrim against the conical ange,v 5, and at the sametime the outer edge of the rim is 7 left free to be contractedv by theforce of the pneumatic tire. Such compression and contraction results inforcibly and securely seating the demountable rim u on the centering andsupporting studs, edge of the rim is left free to be expanded, as by atool inserted in the outer end of the split in the rim, an operationwhich facili tates the unbottoning of the rim when the tire is .deiiatedThe .second important g change consists in transversely slotting thefixed rim in such manner that the rim-end connecting and driving studsneed not at first be fully en aged with the fixed rim. This results inal owing the valve ystem por-' tion of thel rim to be held outwardlyuntil the opposite side of the rim has been butv toned over the wheelafter which said valve stem portion may be forced inwardly against studsto fully engage My purpose, in this, is b utton on with less clearanceover rim.

These portionsy of Cthe structure are best 9 shown in Figs. 4, 5, and 6;wherein 20 represents a compromise diagonal transverse cut or split bywhich the rim ends, 8 and 8*,1are made self-alining. This self-alininwith the fixed rim. to allow the rim to the fixed feature of the rim isnot specifically claime 1 in this application, Dbut is both -shown anddescribed in my companion application yof even date herewith, to-wit`Serial No. 86,598. The diagonal split shown in Fig. 4 further differsfrom others in .the provision of a .1 constantly open notch, 21, in theouter edge of the rim,\8, between the ends of the rim.

I prefer that the side walls ofthe notch, 21, shall be madelbyperpendicular 4cuts in the edge. of the rim, 8. Thus formed,the notch ireadily admits the wedge point, 22, of a screw driver orlike tool, bymeans of which the 'ends of the rim may be pried apart to expand orcircumferentially distend the the rim, .8, for the purpose 1 abovementioned. The valve stem hole` 17, is positioned close to the split,20, and each side thereof, z', e., on each rim-end, 8, 8", I provide aiim-end-connecting-and-driving stud, 23. These two studs are most conlveniently shouldered against the inner periphery of the rimand arevriveted in the body portion thereof, as shown in Fig. 5. containscorresponding slots, 24, positioned to vreceive the two driv. 1 ingstuds, 23,- 23. I prefer that` the slots shall be transversely elongatedand partly formed in the outstanding flange, 5, of the rim. Upon eachstud I form a hook-shaped endor shoulder, 25, adapted to hook under lthe overhanging part of the flange, 5, when the demountable rim isfully` positioned on the wheel. The slots, 2l, are of such transverselength that the end connecting and drivin studs, 23, may be dropped imothe same efore the edge of the demountable rim engages the back-flange,5. 'lhe valve stem yields in the rim sufficiently' to allow this actionwhen valve stem hole, 18, in the'felly. After the opposite side of therim has been buttoned over the wheehthe rim as a whole is pushed axiallythereon and thus the hooks, .25, of the studs, 23, are engaged with thefixed rim (see Fig. 5). When thus engaged the studs and the fixed rimjointly tie the rim ends together and to the fixed rim, substantially inthe plane of the inner flange of the den'iountable rim. Obviously thestuds prevent circumferential movement of the demountable rim on thewheel and obviously thehooks upon the studs also prevent radial movementor distention of the rim-ends with respect to the body of the wheel.Thereore, when once positioned on the fixed rim t e demountable rim issecurely held against her disalinement thereon or dislodgmcnt therefromuntil the demountable rim is intentionally unbuttoned from the wheel.

y' preference, I arrange one of the pressure'plates, 11, so that itoverlaps the split in the rim, thus further supporting the rim ends, 8,and 8". As shown by dotted lines in Fig. 4, one of the centering` andsupporting studs, 16, is arranged directly beneath the split in the rimto additionally1 support the rim ends. v

In most cases the demountable transplit rim may be buttoned andunbuttoned on the wheel Without anyattention being given to thecircumference of the outer edge of the rim, but` whenever the operationis found to be too difficult the difficulty can quickly be remedied byexpanding the outer flange ot' the rim, as by means of the tool, 22,placed in the notch, 21.

As various modifications of my invention will readily suggest themselvesto one who is skilled the invention to the precise construction hereinshown and descri except as specifically set frth in the appended claims.

Havlng thus described my invention, I claim as new and desire to secureby Letters Patent 1. A motor vehicle wheel having a substantiallyconical back-flange, in combination with lan integrally flangedtransplit demountable rim of reater dlameter than the wheel and formedgfor single line conical contact with said back-flange thereof, meanstying the rim-ends together and to the wheel substantially in the planeof the inner side flange of the rim,and a plurality of pressure platesand bolts on the outer side of it is first dropped into theV )acent theouter edge of the studs circumferentially the wheel, adapted to exertaxial pressure against the o ter side flange of said lrim and tio holdthe inner side thereof on said backf amro.

2.bA motor vehicle wheel having a substantially conical back-flange, incombination with an integrally flanged transplit demountable rim ofgreater diameter than the wheel and formed for .single line conicalcontact with said backfflange thereof, a plurality of pressure platesand bolts therefor on the outer side of the wheel, for engagement withthe outer flange of said rim, and fixed rim centering-and-supportingstuds circumferentially spaced in the annular opening between the wheeland rim and adwheel.

motor vehicle wheel having a fixed rim formed with a back-flange andprovided with a vah'e stem hole, in combination with an integrallyflanged transplit demountable rim of greater diameter than the wheel andhaving its inner edge engaged with said back-flange thereof, axialpressure means on the outer side of the wheel and pressing against theouter flange of said demountable rim, a plurality of centering andsupporting spaced on said fixed rim near the outer edge thereof, and aplurality of similar studs on said demountable rim and engaged with saidfixed rim at? points diametrically opposite the valve stem hole therein.

4. A motor vehicle wheel stantially conical back-flange, 1n combinationwith an integrally flanged transplit demountable rim of greater diameterthan the wheel and formed for single line of conical contact with saidback-flange thereof, means tying the rim-ends together and to the wheelsubstantially in the plane of the inner side flange of the rim, aVlurality of pressure plates and bolts there or on the outer side of thewheel, adapted to exert axial pressure against the outer side flange ofsaid rim, and fixed rim-centering-and-supporting studs circumferentiallyspaced in the annular space between the wheel and rim.

5. A motor vehicle wheel having a Vsubstantially conical back-flange anda valvestem hole, in combination with an integrally flanged transplitdemountable rim of greater diameter than the wheel and formed for singleline conical contact with said backflange thereof, .means tying the rimends together and `to the wheel substantially in the plane of the innerside flange of the rim, a plurality of pressure plates and bolts on theouter side of the Wheel, adapted to eX- ert axial pressure against theouter side flange of said rim, rim-centering-and-supporting studscircumferentially spaced and fixed on the inner periphery ofsaid rimopposite the Vvalve stem position a'nd similar studs circumferentiallyspaced and fixed on having a subl` l' the periphery of the wheel on eachside of the valve stem hole therein, substantially asand for the purposespeci ed.

6. A motor-vehicle-Wheel elly band, having a circumferential andsubstantially conical back-flange and provided with a valve stem holeand with transversely elongated driving stud holes, 'the latter beingpositioned on opposite sides of said valve stem hole, and extendi intobut not through said back-flange, su tantially as and or the purposespeeiiied.

ixed rim, orl

opposite sides of saidva 7. A 1ndtor-vehiclewheel iiXed rim `or fellyband having a circumferential and substantially conical back-flange andprovided 15 with a valve stem hole and with two driving stud holes, thelatter being positioned at lve stem hole, butnearer to said back flangethan to the front edge of said'felly band, substantially as and 20 RLEKING BAKER.

